The game is based on Steamlands, but there are many references to other games, includding nitrome games.
Austin, Justin and the Co Worker are references to the nitrome game Nitrome Must Die.
Quote is a reference to the game Cave Story.
Pyro and Mundee are references to the game Team Fortress 2.
Pinkie Pyro is a popular internet character, being an mix of the characters Pinkie Pie from the TV show My Little Pony: Friendship is Magic and Pyro from Team Fortress 2.
Meelee weapons have a large range, makes the player faster and do more damage because of an balancing between weapons. As they are not able to shoot projectiles that go far away from the player, they must be allowed to have an special ability.
The weapons Rusty Minigun, Machine Gun, Machina, Royal Rapier and Sniper Rifle gives the player an property than he is not abble to jump while shooting, because of weapon's weight or how it works.
The Machina and the Sniper Riffle have the ability to use an scope. Pressing the jump button while shooting will active the scope zoom, focusing the screen at the direction you're facing.