v2.1: bug fixes
v2.0: 2 new enemies (RUNNER & WANDERER), 30 more stages, including the boss fight (Stage 60) -- after unlocking stage 31, you'll see the "MORE!" button on the Stage Menu page, also bug fixes and tweaks to game balance.
v1.1: bug fixes, game balance (stages 17,30)
Missile Invader - retro handheld emulation. Every detail has been recreated