User:Alex the weeb/List of bonus rooms in Subspace Emissary

Stage	Layout	Theme	Hazards	Location
Skyworld		Clouds	Autoscrolls	Hidden behind one of the rising and falling pillars.
Sea of Clouds		Clouds	None	Above the open section with the Feyesh.
The Jungle		Jungle	Enemies, revolving platforms	Destroy the 3x3 blocks with the topmost tracker ball in the tracker ball section.
The Jungle		Jungle	None	Platform to the left in the waterfall section.
The Plain		Ruins	Bottomless pit	Above the 2 overhead parallel walls in the ruins section.
The Lake		Ruins	None	Floating door midway through boat ride.
The Ruined Zoo		Concrete	Falling platforms, spikes, ice	In the crevice in the bottom right of the large boxy platform with Tickens.
The Battlefield Fortress		Underground	Minecart, spikes	In a crevice on the ground just after the first minecart of the underground section.
The BattleField Fortress		Castle	Jyk	Behind locked gate in the castle section at the beginning.
The Forest		Ruins	Jyk	Between 2 of the skinny trees.
The Lake Shore		Cave	Water	Destroy blocks in crevice up and to the left of red hot pokers section.
The Lake Shore		Cave	Water, falling blocks	Defeat the Shaydas by the sinister face carved in the wall in the cave.
The Path to the Ruins		Desert ruins	N/A	In one of the "bottomless pits" in the section with multiple pits. The one just before the Borboras which helpfully tries to push you in.
The Cave		Cave	Crushing	Above the final crushing stone pillar. Wait for it to drop all the way.
The Cave		Cave	Falling platform, falling blocks	Guarded by mini crushing stone pillar at the end.
The Ruins		Underground ruins	Timed doors (crushing), spikes	Solve the 3-button puzzle with the Roturret above it.
The Ruins		Underground ruins	Moving platforms, bottomless pit	To the left in the downwards autoscrolling section with the moving platform and crystal spikes.
The Wilds 1		Desert ruins	Moving platforms	In the crevice at the top right end of the very large wall after the first autoscroll falling section.
The Wilds 1		Desert ruins	Moving platforms, spikes, Jyk	In the top right of the cannon section at the end.
The Wilds 2		Desert	N/A	Under the middle lift in the section with the 3 consecutive lifts.
The Swamp		Swamp	Water	In a crevice below the pyramid shaped wooden spikes towards the end of one of the swamp segments.
The Swamp		Jungle	N/A	On a platform to the left, partway through the vertical autoscroller with the ladders.
The Research Facility 2		Facility	N/A	Below the long ladder near the start. Hit the button to lower red platforms.
The Research Facility 2		Facility	Bottomless pit, spikes, crushing	Between 2 sets of bomb blocks below an ambush in the section with the gear platforms. Take the ladder.
Outside the Ancient Ruins		Ancient ruins	Falling blocks, bottomless pit	Above the destroyable block platforms after the first ambush.
Outside the Ancient Ruins		Ancient ruins	Bottomless pit	In the open area at the beginning of the level.
The Glacial Peak		Underground	Primids, darkness	After the long-distance vertical cannon. Appears after firing from it.
The Glacial Peak		Ice	Water, spikes	To the right at the beginning of the crosswind section.
Battleship Halberd Interior		Battleship	Jyk, falling blocks, spikes	Hit the button hidden by the leftmost block of the 3rd of 3 lines of falling blocks near the beginning.
Battleship Halberd Interior		Battleship	Glire spawner	Through the false wall up and to the right of the spawner in the bottom right chamber of the destroy spawner section.
The Subspace Bomb Factory 1		Facility	Ambush	Lower middle left section on the first lift (or second floor on left if you prefer).
The Subspace Bomb Factory 1		Facility	N/A	Top left section on the second lift, defeat ROBs to reveal door.
The Subspace Bomb Factory 2		Facility	N/A	Above and to the left of the blue switch.
The Subspace Bomb Factory 2		Facility	N/A	On one of the revolving platforms immediately after the first ambush.