Invader is a vertical scrolling shoot-em-up developed for the Nintendo Game Boy Advance. Players navigate through eight levels, each culminating in a boss encounter. The game offers a choice between two distinct ships, each boasting unique attributes. Defeated enemies drop coins that can be used in the in-game shop to acquire upgrades, including weapons, extra lives, and credits.
Invader is a vertical scrolling shoot-em-up for the Nintendo Game Boy Advance. There are 8 levels to shoot through each ending with a end-boss. The player can select from 2 different ships each with specific features. Enemies leave coins that can be spent in the Shop, where upgrades such as weapons, extra lives, and credits are available for purchase.