Acid Drop

Acid Tetris is a freeware Tetris clone, true to the original version.

There is only one game mode, where you guide an unlimited amount of falling bricks to form complete rows until you hit the top of the screen.

The Atari 2600 (1977) was the console that first proved interchangeable game cartridges could sustain a mass-market business, effectively founding the home console industry as we know it. Most common 2600 titles are inexpensive today given how many units and copies were sold, but a small number of extremely rare releases — including several from Atari's own late-era prototype and licensed titles — are among the most valuable cartridges in retro collecting.

Gamevaro tracks Acid Drop for Atari 2600 with separate market values for loose, complete-in-box (CIB) and factory-sealed copies, sourced from real eBay sales. Prices also vary by region — PAL, NTSC-U and NTSC-J releases of the same game often sell for different amounts due to print run sizes and regional collector demand.

Adding Acid Drop to a Gamevaro collection takes seconds — search by title or scan the box barcode, and the app fills in cover art, release details and current pricing automatically. This A2600 release dates back to 1992.

Only a handful of market sales have been tracked for Acid Drop, suggesting it doesn't trade hands very often — a sign of relative scarcity compared to more common Atari 2600 titles.

Complete-in-box (CIB) copies typically command a premium over loose cartridges/discs because the original box and manual are more fragile and get discarded or damaged over time — fewer complete sets survive.

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