kutsyk_alexander

OpenTTD

The cheapest SBC x86-64 I can find is LattePanda Delta. But it cost ~$200.

Did you use this instruction? If so, i think you forgot this step

wget -O- https://download.opensuse.org/repositories/home:/bgstack15:/aftermozilla/Debian_Unstable/Release.key | sudo gpg --dearmor -o /etc/apt/keyrings/home_bgstack15_aftermozilla.gpg

1. Protondb - info about current state and playability of almost any game on Steam driven by community.
2. AFAIK many calendar apps use CalDAV protocol which is quite universal. So basically any compatible with CavDAV protocol app (Thunderbird, Evolution) will work just fine.
3. VS Code + some extensions - yes, I know that it is not an IDE. I use it for game development on Unity (C#) and it makes job done.

sudo swapon /dev/zram0

Source