Games like Gunbird S for Kakao
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!
Starbeast
A 2.5D sidescrolling shooter for Wii U, PC and mobile platforms
Unclaimed World
We take the colony sim genre into the near future, onto a lush planet where humans are making their first foothold. Characters and alien wildlife are brought to life through a rigorous simulation and the game plays out as a tug-of-war between humans and nature on a planet full of opportunities and dangers. Understanding the alien environment is crucial - discovered resources and crafting options enable you to adapt when food gets scarce, equipment breaks and alien animals attack.
Double Bloob
Blob-like beings have kidnapped a dolphin and it is up to you to rescue him!
Caverns of Minos
Caverns of Minos is a freaky twist on Caverns of Mars by Llamasoft, the home of freaky twists on 8-bit video games.
Vectorgeddon
Vectorgeddon is a Missile-Command-styled game where you must defend the Earth from asteroids.
Super Ox Wars
Super Ox Wars is a polarity-style scrolling shooter from Llamasoft.
Twin Tiger Shark
Twin Tiger Shark is a tribute to arcade vertical shoot-'em-ups, released for OUYA and Xbox 360 (via Indie games store)
Boomblastica
A music driven shooter for iOS/Android by Thrust Interactive. This top down shooter features innovative use of sound in the way of changing the soundtrack based on weapons and enemies.
Liberty Wings
Liberty Wings is a WWII air combat game.