Heavy Weapon — Deluxe Free Download

Community reports on ProtonDB indicate it is playable on Linux and Steam Deck, though it may require manual keyboard invocation or custom controller configurations.

In this retro-inspired shoot-'em-up, players control an Atomic Tank moving across a 2D landscape to defend against waves of enemy aircraft and land vehicles. Heavy Weapon Deluxe Free Download

There are six secret weapon systems to unlock and upgrade, including lasers, rockets, and nukes. Platform Compatibility Community reports on ProtonDB indicate it is playable

Although an older title, it remains accessible on modern systems with some adjustments: which often features sales.

Most reliably purchased and downloaded through the Steam Store, which often features sales.