Mission Outer Space vs Space Smash

Mission Outer Space is a pixelart space shooter game with a lot of different worlds and enemys. There are also different space ships with upgrades. In addition the level system has a lot of nice rewards

Build the universe from the tiniest particles to the largest cosmic structures in this relaxing yet addictive space merging adventure! Start with the foundations of existence and discover what happens when science, strategy, and chaos collide. Merge atoms, planets, stars, comets, galaxies, black holes, and more as you evolve through the universe one discovery at a time. Every level introduces brand-new cosmic objects inspired by real astronomy, astrophysics, and space exploration. From dwarf planets and exoplanets to nebulae, binary stars, and mysterious intergalactic phenomena, there is always something new waiting to be discovered. Unlock over 150 unique space objects across dozens of handcrafted levels, each with their own visuals, descriptions, and progression paths. Plan your drops carefully, manage the growing chaos inside the container, and survive long enough to create the final cosmic evolution. Features: Relaxing physics-based merge gameplay Discover planets, stars, galaxies, comets, nebulae, and more Explore levels inspired by real space science and astronomy Unlock cute kawaii-style cosmic objects Progress through dozens of unique cosmic stages Atmospheric space music and satisfying sound effects Track discoveries and complete your cosmic collection Earn lives and keep your universe evolving Easy to play, hard to master, and impossible to put down. Can you build the universe?