This is a homebrew game that I developed in Batari Basic, initally seeing a limited release on August 21, 2020. The game itself is very limited; only 4 blocks can be on screen at a time, each one re-appearing immediately after it hits the edge of the screen, the coin is nothing more than a straight horizontal line, and there's no ammo. You could call this a "Challenge Mode" if you want to.

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This game works on the Atari 2600. It uses a standard 4K ROM, so no bankswitching shenanigans are required.