World of Tanks: HEAT is a fast-paced free to play hero-driven tank action game, it just released on Steam and it does work on Linux / SteamOS systems. It has Easy Anti-Cheat (which can be a big problem for Linux) but the developer has enabled it for Linux so you should have no problem running it. And, Valve rated it as Steam Deck Verified too.
For the online play it's fully cross-platform to play with people across Steam, PlayStation 5, Xbox Series X|S, and GeForce NOW. The developer even advertises Steam Deck support for it directly - all across a single account (Wargaming) which links to your Steam account.

Pictured - World of Tanks: HEAT on Fedora KDE 44
On the Max settings at 2560x1440 the performance has been pretty good, although there are some drops down to around 60FPS when there's a lot of action going on but it seems overall pretty smooth.
It has launched to a pretty rough reception, with it quickly getting a Mostly Negative user review score on Steam.
Something to note for those who find it important, their AI notice on the Steam page:
Generative AI is used solely during development for supplemental, non-essential purposes, including design ideation, code production support, or localization assistance. These AI-generated outputs are limited in scope, reviewed by our development team, and never substitute human creative or technical decision-making. All final core assets and game content are created by Wargaming’s artists and developers.




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