Geometry Dash Nemesis is an action-adventure game set in a colorful square box in a neon world. Players take on the task of destroying obstacles, collecting gold coins, upgrading, and buying guns to increase their strength. The game features increasing speed as players progress, adding to the challenge. The level was created by players Galzo and FunnyGame and is rated as a medium demon in terms of difficulty. The main challenges in the level are navigating narrow hallways and boss battles. The level is constructed in lilac and white hues and has over 30,000 items, making it advisable for players with low-end devices to use the Low Detail Mod (LDM) setting.
The gameplay begins with a cube stage that involves timing with spheres, followed by a robot stage where players must fly inside teleport portals. The level also features auto-stage cube sections, gravity gateways with UFOs, ball stages with sphere timing, and a boss battle where players need to avoid boss attacks from all directions. The level concludes with a cube section, a relatively easy ball stage, a slightly more challenging wave section, and a final robot stage. The scenery in Nemesis is similar to The Colossus and The Colossus II levels created by Manix648.