Spelunky, Made With GameMaker

Spelunky is an exploration treasure-hunting game inspired by classic platform games, developed by Mossmouth. Grab as much treasure from the cave as possible.

Spelunky - Wikipedia

Spelunky 2

Temporarily free: GameMaker Studio, the engine for Hotline Miami

Derek Yu on X: GameMaker is what I used to create Spelunky

Spelunky Classic source code for GameMaker: Studio

Spelunky 2

The Spelunky Variations

Spelunky Review

GitHub - oyvind-stromsvik/spelunky

Spelunky Source Code file - Mod DB

Steam :: Rock, Paper, Shotgun :: Game creation tool GameMaker is

GameMaker throws shade at Unity, makes its 2D engine free or $100