You play the role of a disembodied head in a mech, at the top floor of a giant spaceship called the Megalith. In the intro, a voice calling himself Rodney asks him to travel to the bottom floor, and get him out.
Tropes found in the game include:
- Bullet Hell: Many of the regular enemies and almost all of the bosses shoot tons of bullets.
- Colourful Theme Naming: All mechs are named after color...except the Flame Tank for some reason.
- Charged Attack: Some of the guns can be charged in order to unleash a stronger attack.
- Difficult, but Awesome: Redshift has abysmal stat (including extremely low health and no shield), but its timestop ability means that you can plan as long as you like in order to dodge incoming bullets. If you manage to survive long enough to upgrade its survivability (and possibly some high damage, low rate of fire guns), it's a monster.
- Heart Container: There are several items and perks that increase your maximum health.
- Hitbox Dissonance: The player's hitbox is much smaller than the sprite, as is the tradtion in bullet hell games.
- Jump Scare: An enemy type is named after these. These are small enemies that stand completely still... Until you walk next to them, which causes them to run and shoot bullets all over the place.
- Marathon Boss: The Warden has far more health than the other bosses, and also has four durable mooks fighting with him. Terminus, on the other hand, is technically a fight against 3 different bosses.
- No-Damage Run: Beating a boss without taking a hit grants you an achievement.
- Roguelike: The game includes procedurally generated floors and permadeath typically seen in roguelikes.
- Unexpected Gameplay Change: The Redshift changes your gameplay from Bullet Hell Roguelike into Bullet Hell SUPERHOTline Miami Roguelike instead, with the mech having the ability to stop time completely unless you shoot or move note .