Game starts, mouse cursor moves, but can't click & use keyboard.

When i start the game (via steam), i can only see the menu, then I can do nothing, nothing reacts to click or key hits.
Only Alt-F4 closes the game.
Even steam Shift-tab doesn't bring the steam interface.

Anyone has that too ?

PS : this may not be specific to this game, as I have this issue with some other games, but could'nt find a solution.

Are you playing on Linux? Have you started the game through Steam?

Be sure to launch it from Steam, not standalone. It actually helps solve an issue too.

If on Linux this is a know issue but we fixed it with a trick when the game launches. It could be
that it doesn't work on your distro.

But try launching the game through steam and let us know how it goes.

You can also try editing playerprefs and play the game in windowed mode, this can very well solve the issue. But downside is that it is windowed.

open file ~/.config/unity3d/Bugbyte/Battlevoid_ Sector Siege/prefs

And edit

... is fullscreen mode type int... Set it to 0.