Halo

Microsoft / Xbox Games Studios revealed Halo: Campaign Evolved, which will be releasing sometime in 2026 and it will have a Steam release too. As long as there's no major annoyances from Microsoft here, it should hopefully run well enough on Linux based systems using Valve's Proton.

Coming from Halo Studios, the original is being remade in Unreal Engine 5. It will be coming with "stunning new 4K visuals, updated animations, remastered music, and re-recorded voice lines". Plus we're getting treated to weapons and vehicles from later games in the series, and three new bonus prequel campaign missions. We also get up to 4 player online co-op with cross-play, but split-screen is once again console-only.