diff --git a/code/__DEFINES/xeno.dm b/code/__DEFINES/xeno.dm
index 82237cd793b2..e9eb4ca4c1ed 100644
--- a/code/__DEFINES/xeno.dm
+++ b/code/__DEFINES/xeno.dm
@@ -165,6 +165,12 @@
 /// The amount of time after round start before buried larva spawns are disallowed
 #define XENO_BURIED_LARVA_TIME_LIMIT (30 MINUTES)
 
+/// The time when xenos can start taking over comm towers
+#define XENO_COMM_ACQUISITION_TIME (90 MINUTES)
+
+/// The time it takes for a pylon to give one larva while activated
+#define XENO_PYLON_ACTIVATION_COOLDOWN (5 MINUTES)
+
 /// The time against away_timer when an AFK xeno larva can be replaced
 #define XENO_LEAVE_TIMER_LARVA 80 //80 seconds
 /// The time against away_timer when an AFK xeno (not larva) can be replaced
diff --git a/code/game/machinery/telecomms/presets.dm b/code/game/machinery/telecomms/presets.dm
index a25293aebbd3..68d67b6e702f 100644
--- a/code/game/machinery/telecomms/presets.dm
+++ b/code/game/machinery/telecomms/presets.dm
@@ -212,12 +212,27 @@ GLOBAL_LIST_EMPTY(all_static_telecomms_towers)
 	freq_listening = list(COLONY_FREQ)
 	var/toggle_cooldown = 0
 
+	/// Tower has been taken over by xenos, is not usable
+	var/corrupted = FALSE
+
+	/// Held image for the current overlay on the tower from xeno corruption
+	var/image/corruption_image
+
+/obj/structure/machinery/telecomms/relay/preset/tower/mapcomms/Initialize()
+	. = ..()
+
+	RegisterSignal(src, COMSIG_ATOM_TURF_CHANGE, PROC_REF(register_with_turf))
+	register_with_turf()
+
 /obj/structure/machinery/telecomms/relay/preset/tower/mapcomms/attack_hand(mob/user)
 	if(user.action_busy)
 		return
 	if(toggle_cooldown > world.time) //cooldown only to prevent spam toggling
 		to_chat(user, SPAN_WARNING("\The [src]'s processors are still cooling! Wait before trying to flip the switch again."))
 		return
+	if(corrupted)
+		to_chat(user, SPAN_WARNING("[src] is entangled in resin. Impossible to interact with."))
+		return
 	var/current_state = on
 	if(!do_after(user, 20, INTERRUPT_NO_NEEDHAND|BEHAVIOR_IMMOBILE, BUSY_ICON_FRIENDLY, src))
 		return
@@ -282,6 +297,84 @@ GLOBAL_LIST_EMPTY(all_static_telecomms_towers)
 	else
 		update_icon()
 
+/// Handles xenos corrupting the tower when weeds touch the turf it is located on
+/obj/structure/machinery/telecomms/relay/preset/tower/mapcomms/proc/handle_xeno_acquisition(turf/weeded_turf)
+	SIGNAL_HANDLER
+
+	if(corrupted)
+		return
+
+	if(!weeded_turf.weeds)
+		return
+
+	if(weeded_turf.weeds.weed_strength < WEED_LEVEL_HIVE)
+		return
+
+	if(!weeded_turf.weeds.parent)
+		return
+
+	if(!istype(weeded_turf.weeds.parent, /obj/effect/alien/weeds/node/pylon/cluster))
+		return
+
+	if(SSticker.mode.is_in_endgame)
+		return
+
+	if(ROUND_TIME < XENO_COMM_ACQUISITION_TIME)
+		addtimer(CALLBACK(src, PROC_REF(handle_xeno_acquisition), weeded_turf), (XENO_COMM_ACQUISITION_TIME - ROUND_TIME))
+		return
+
+	var/obj/effect/alien/weeds/node/pylon/cluster/parent_node = weeded_turf.weeds.parent
+
+	var/obj/effect/alien/resin/special/cluster/cluster_parent = parent_node.resin_parent
+
+	var/list/held_children_weeds = parent_node.children
+	var/cluster_loc = cluster_parent.loc
+	var/linked_hive = cluster_parent.linked_hive
+
+	parent_node.children = list()
+
+	qdel(cluster_parent)
+
+	var/obj/effect/alien/resin/special/pylon/endgame/new_pylon = new(cluster_loc, linked_hive)
+	new_pylon.node.children = held_children_weeds
+
+	for(var/obj/effect/alien/weeds/weed in new_pylon.node.children)
+		weed.parent = new_pylon.node
+
+	RegisterSignal(new_pylon, COMSIG_PARENT_QDELETING, PROC_REF(uncorrupt))
+
+	corrupted = TRUE
+
+	corruption_image = image(icon, icon_state = "resin_growing")
+
+	flick_overlay(src, corruption_image, (2 SECONDS))
+	addtimer(CALLBACK(src, PROC_REF(switch_to_idle_corruption)), (2 SECONDS))
+
+	new_pylon.comms_relay_connection()
+
+/// Handles removing corruption effects from the comms relay
+/obj/structure/machinery/telecomms/relay/preset/tower/mapcomms/proc/uncorrupt(datum/deleting_datum)
+	SIGNAL_HANDLER
+
+	corrupted = FALSE
+
+	overlays -= corruption_image
+
+/// Handles moving the overlay from growing to idle
+/obj/structure/machinery/telecomms/relay/preset/tower/mapcomms/proc/switch_to_idle_corruption()
+	if(!corrupted)
+		return
+
+	corruption_image = image(icon, icon_state = "resin_idle")
+
+	overlays += corruption_image
+
+/// Handles re-registering signals on new turfs if changed
+/obj/structure/machinery/telecomms/relay/preset/tower/mapcomms/proc/register_with_turf()
+	SIGNAL_HANDLER
+
+	RegisterSignal(get_turf(src), COMSIG_WEEDNODE_GROWTH, PROC_REF(handle_xeno_acquisition))
+
 /obj/structure/machinery/telecomms/relay/preset/telecomms
 	id = "Telecomms Relay"
 	autolinkers = list("relay")
diff --git a/code/modules/cm_aliens/structures/special/pylon_core.dm b/code/modules/cm_aliens/structures/special/pylon_core.dm
index 993d4f833fa6..068ffeb659eb 100644
--- a/code/modules/cm_aliens/structures/special/pylon_core.dm
+++ b/code/modules/cm_aliens/structures/special/pylon_core.dm
@@ -12,6 +12,7 @@
 	block_range = 0
 	var/cover_range = WEED_RANGE_PYLON
 	var/node_type = /obj/effect/alien/weeds/node/pylon
+	var/obj/effect/alien/weeds/node/node
 	var/linked_turfs = list()
 
 	var/damaged = FALSE
@@ -25,7 +26,7 @@
 /obj/effect/alien/resin/special/pylon/Initialize(mapload, hive_ref)
 	. = ..()
 
-	place_node()
+	node = place_node()
 	for(var/turf/A in range(round(cover_range*PYLON_COVERAGE_MULT), loc))
 		LAZYADD(A.linked_pylons, src)
 		linked_turfs += A
@@ -34,9 +35,8 @@
 	for(var/turf/A as anything in linked_turfs)
 		LAZYREMOVE(A.linked_pylons, src)
 
-	var/obj/effect/alien/weeds/node/pylon/W = locate() in loc
-	if(W)
-		qdel(W)
+	if(node)
+		QDEL_NULL(node)
 	. = ..()
 
 /obj/effect/alien/resin/special/pylon/attack_alien(mob/living/carbon/xenomorph/M)
@@ -87,8 +87,78 @@
 	playsound(loc, "alien_resin_build", 25)
 
 /obj/effect/alien/resin/special/pylon/proc/place_node()
-	var/obj/effect/alien/weeds/node/pylon/W = new node_type(loc, null, null, linked_hive)
-	W.resin_parent = src
+	var/obj/effect/alien/weeds/node/pylon/pylon_node = new node_type(loc, null, null, linked_hive)
+	pylon_node.resin_parent = src
+	return pylon_node
+
+/obj/effect/alien/resin/special/pylon/endgame
+	cover_range = WEED_RANGE_CORE
+	var/activated = FALSE
+
+/obj/effect/alien/resin/special/pylon/endgame/Destroy()
+	if(activated)
+		activated = FALSE
+
+		if(hijack_delete)
+			return ..()
+
+		marine_announcement("ALERT.\n\nEnergy build up around communication relay at [get_area(src)] halted.", "[MAIN_AI_SYSTEM] Biological Scanner")
+
+		for(var/hivenumber in GLOB.hive_datum)
+			var/datum/hive_status/checked_hive = GLOB.hive_datum[hivenumber]
+			if(!length(checked_hive.totalXenos))
+				continue
+
+			if(checked_hive == linked_hive)
+				xeno_announcement(SPAN_XENOANNOUNCE("We have lost our control of the tall's communication relay at [get_area(src)]."), hivenumber, XENO_GENERAL_ANNOUNCE)
+			else
+				xeno_announcement(SPAN_XENOANNOUNCE("Another hive has lost control of the tall's communication relay at [get_area(src)]."), hivenumber, XENO_GENERAL_ANNOUNCE)
+
+	return ..()
+
+/// Checks if all comms towers are connected and then starts end game content on all pylons if they are
+/obj/effect/alien/resin/special/pylon/endgame/proc/comms_relay_connection()
+	marine_announcement("ALERT.\n\nIrregular build up of energy around communication relays at [get_area(src)].", "[MAIN_AI_SYSTEM] Biological Scanner")
+
+	for(var/hivenumber in GLOB.hive_datum)
+		var/datum/hive_status/checked_hive = GLOB.hive_datum[hivenumber]
+		if(!length(checked_hive.totalXenos))
+			continue
+
+		if(checked_hive == linked_hive)
+			xeno_announcement(SPAN_XENOANNOUNCE("We have harnessed the tall's communication relay at [get_area(src)]. Hold it!"), hivenumber, XENO_GENERAL_ANNOUNCE)
+		else
+			xeno_announcement(SPAN_XENOANNOUNCE("Another hive has harnessed the tall's communication relay at [get_area(src)].[linked_hive.faction_is_ally(checked_hive.name) ? "" : " Stop them!"]"), hivenumber, XENO_GENERAL_ANNOUNCE)
+
+	activated = TRUE
+	addtimer(CALLBACK(src, PROC_REF(give_larva)), XENO_PYLON_ACTIVATION_COOLDOWN, TIMER_UNIQUE|TIMER_OVERRIDE|TIMER_LOOP|TIMER_DELETE_ME)
+
+#define ENDGAME_LARVA_CAP_MULTIPLIER 0.4
+#define LARVA_ADDITION_MULTIPLIER 0.10
+
+/// Looped proc via timer to give larva after time
+/obj/effect/alien/resin/special/pylon/endgame/proc/give_larva()
+	if(!activated)
+		return
+
+	if(!linked_hive.hive_location || !linked_hive.living_xeno_queen)
+		return
+
+	var/list/hive_xenos = linked_hive.totalXenos
+
+	for(var/mob/living/carbon/xenomorph/xeno in hive_xenos)
+		if(!xeno.counts_for_slots)
+			hive_xenos -= xeno
+
+	if(length(hive_xenos) > (length(GLOB.alive_human_list) * ENDGAME_LARVA_CAP_MULTIPLIER))
+		return
+
+	linked_hive.partial_larva += length(hive_xenos) * LARVA_ADDITION_MULTIPLIER
+	linked_hive.convert_partial_larva_to_full_larva()
+	linked_hive.hive_ui.update_burrowed_larva()
+
+#undef ENDGAME_LARVA_CAP_MULTIPLIER
+#undef LARVA_ADDITION_MULTIPLIER
 
 //Hive Core - Generates strong weeds, supports other buildings
 /obj/effect/alien/resin/special/pylon/core
diff --git a/code/modules/cm_aliens/structures/special_structure.dm b/code/modules/cm_aliens/structures/special_structure.dm
index caa729f1df87..69bdcc2438ac 100644
--- a/code/modules/cm_aliens/structures/special_structure.dm
+++ b/code/modules/cm_aliens/structures/special_structure.dm
@@ -39,6 +39,9 @@
 
 	plane = FLOOR_PLANE
 
+	/// Tells the structure if they are being deleted because of hijack
+	var/hijack_delete = FALSE
+
 /obj/effect/alien/resin/special/Initialize(mapload, hive_ref)
 	. = ..()
 	maxhealth = health
diff --git a/code/modules/cm_aliens/weeds.dm b/code/modules/cm_aliens/weeds.dm
index f20fa842e446..01140beae304 100644
--- a/code/modules/cm_aliens/weeds.dm
+++ b/code/modules/cm_aliens/weeds.dm
@@ -55,7 +55,7 @@
 		linked_hive = GLOB.hive_datum[hivenumber]
 
 	set_hive_data(src, hivenumber)
-	if(spread_on_semiweedable)
+	if(spread_on_semiweedable && weed_strength < WEED_LEVEL_HIVE)
 		if(color)
 			var/list/RGB = ReadRGB(color)
 			RGB[1] = Clamp(RGB[1] + 35, 0, 255)
@@ -588,9 +588,13 @@
 	weed_strength = WEED_LEVEL_HIVE
 	node_range = WEED_RANGE_PYLON
 	overlay_node = FALSE
+	spread_on_semiweedable = TRUE
 	var/obj/effect/alien/resin/special/resin_parent
 
 /obj/effect/alien/weeds/node/pylon/proc/set_parent_damaged()
+	if(!resin_parent)
+		return
+
 	var/obj/effect/alien/resin/special/pylon/parent_pylon = resin_parent
 	parent_pylon.damaged = TRUE
 
@@ -616,7 +620,13 @@
 /obj/effect/alien/weeds/node/pylon/acid_spray_act()
 	return
 
+/obj/effect/alien/weeds/node/pylon/cluster
+	spread_on_semiweedable = FALSE
+
 /obj/effect/alien/weeds/node/pylon/cluster/set_parent_damaged()
+	if(!resin_parent)
+		return
+
 	var/obj/effect/alien/resin/special/cluster/parent_cluster = resin_parent
 	parent_cluster.damaged = TRUE
 
diff --git a/code/modules/mob/living/carbon/xenomorph/xeno_defines.dm b/code/modules/mob/living/carbon/xenomorph/xeno_defines.dm
index eaff5a66309e..fbf75f16ca8d 100644
--- a/code/modules/mob/living/carbon/xenomorph/xeno_defines.dm
+++ b/code/modules/mob/living/carbon/xenomorph/xeno_defines.dm
@@ -316,6 +316,7 @@
 		XENO_STRUCTURE_EGGMORPH = 6,
 		XENO_STRUCTURE_EVOPOD = 2,
 		XENO_STRUCTURE_RECOVERY = 6,
+		XENO_STRUCTURE_PYLON = 2,
 	)
 
 	var/global/list/hive_structure_types = list(
@@ -367,17 +368,25 @@
 	if(hivenumber != XENO_HIVE_NORMAL)
 		return
 
-	RegisterSignal(SSdcs, COMSIG_GLOB_POST_SETUP, PROC_REF(setup_evolution_announcements))
+	RegisterSignal(SSdcs, COMSIG_GLOB_POST_SETUP, PROC_REF(post_setup))
 
-/datum/hive_status/proc/setup_evolution_announcements()
+/datum/hive_status/proc/post_setup()
 	SIGNAL_HANDLER
 
+	setup_evolution_announcements()
+	setup_pylon_limits()
+
+/datum/hive_status/proc/setup_evolution_announcements()
 	for(var/time in GLOB.xeno_evolve_times)
 		if(time == "0")
 			continue
 
 		addtimer(CALLBACK(src, PROC_REF(announce_evolve_available), GLOB.xeno_evolve_times[time]), text2num(time))
 
+/// Sets up limits on pylons in New() for potential futureproofing with more static comms
+/datum/hive_status/proc/setup_pylon_limits()
+	hive_structures_limit[XENO_STRUCTURE_PYLON] = length(GLOB.all_static_telecomms_towers) || 2
+
 /datum/hive_status/proc/announce_evolve_available(list/datum/caste_datum/available_castes)
 
 	var/list/castes_available = list()
@@ -890,6 +899,7 @@
 		for(var/obj/effect/alien/resin/special/S in hive_structures[name_ref])
 			if(get_area(S) == hijacked_dropship)
 				continue
+			S.hijack_delete = TRUE
 			hive_structures[name_ref] -= S
 			qdel(S)
 	for(var/mob/living/carbon/xenomorph/xeno as anything in totalXenos)
@@ -1106,6 +1116,10 @@
 /datum/hive_status/proc/increase_larva_after_burst()
 	var/extra_per_burst = CONFIG_GET(number/extra_larva_per_burst)
 	partial_larva += extra_per_burst
+	convert_partial_larva_to_full_larva()
+
+///Called after times when partial larva are added to process them to stored larva
+/datum/hive_status/proc/convert_partial_larva_to_full_larva()
 	for(var/i = 1 to partial_larva)
 		partial_larva--
 		stored_larva++
diff --git a/icons/obj/structures/machinery/comm_tower3.dmi b/icons/obj/structures/machinery/comm_tower3.dmi
index 931d6f77514a..8a5aa1f68fe3 100644
Binary files a/icons/obj/structures/machinery/comm_tower3.dmi and b/icons/obj/structures/machinery/comm_tower3.dmi differ