local co-op mode and also the Steam RemotePlay!
It is never good to face the enemy alone; it is better to have a teammate with whom to share burdens and honors. Even nicer if this buddy is your friend sitting next to you.
In Until the Last Plane 1942 you can both play local co-op on the same computer or even better with RemotePlay across the world!
Each player can choose whether to use the keyboard or the gamepad.
Don't have a gamepad at your friend's house? No problem, you can share the keyboard: the first player will use WASD, the second player Arrows Keys instead.
...Well yes, you guessed it: You can also play solo by controlling two planes with the keyboard. Will you dare?
https://store.steampowered.com/app/2622300/Until_the_Last_Plane_1942/