Games like Darius The Mailman

Pepper Grinder

Pepper Grinder is an action-packed pirate adventure starring the titular Pepper, a seafaring soul with a passion for prospecting, and Grinder, her super-powered drilling device.

Pikuniku

Pikuniku is an absurdly wonderful puzzle-exploration game that takes place in a strange but playful world where not everything is as happy as it seems. Help peculiar characters overcome struggles, uncover a deep state conspiracy, and start a fun little revolution in this delightful dystopian adventure!

Havocado

Havocado is a silly hyper-speed multiplayer physics fighting game; shoot, punch, drive, and use magic to knock the other players off in a multitude of locations and scenarios.

SolSeraph

Retro-inspired tower defense and action platformer SolSeraph reinvents the classics! As the guardian of humanity, civilization is in your hands. Build your cities and set up defensive structures to protect them from the constant threat of monsters, then descend into their lairs with sword and spells to eliminate them for good. Explore floating islands, ancient caverns, and lost cities. The world is yours! Brought to you by ACE Team, the creative minds behind Rock of Ages and Zeno Clash, SolSeraph combines action and strategy for a rich and unique gameplay experience reminiscent of the 16-bit era.

Crackle Cradle

Crackle Cradle is a 2D sidescrolling platformer/shooter developed by FoxTail. This game entails guiding the selected heroine through various areas, traps, and monsters, relying on a mixture of evasive skills and accuracy with their weapons.

Giana Sisters: Project Radiant

A fangame for the unlikely run 'n' jump series Giana Sisters.

Sonic Islands

Sonic Xtreme 2D

Azure Plays The Game

SM64 GBA

SM64 GBA is a non-profit fan project which aims to make a port of Super Mario 64 (along with new features, like new characters) for the Game Boy Advance. The project was started as a means of testing and improving how 3D games can be developed for the Game Boy Advance architecture, a capability that only a few commercial games made use of. The game is still in development, but isn't currently intended to be released officially by the creator.