CLANNAD installs and runs just fine, tweaking the in-game settings posed no issue, and I managed to complete a play-through (All paths and After Story) successfully. Other in-game features like the CG gallery, Music mode, and Dangopedia work as well.
What does not
When the game tries to play the intro video the game crashes. Since playback is triggered only after waiting on the main menu for a while, it it entirely possible to leave the intro video broken, but if you want to get the intro video working then you will need to install Windows Media Player 10 and Quartz through winetricks ("winetricks -q wmp10 quartz"). Then in the in-game configuration menu go to movie settings, select WindowsMediaPlayer, and hit OK.
The game defaults to the Courier font, so if you don't have corefonts installed you will need to select a different font through the in-game configuration menu in order to see text (menu text is not effected by this issue).
What was not tested
All testing was conducted in a clean 32-bit wine prefix.
|Operating system||Test date||Wine version||Installs?||Runs?||Used|
|Show||Ubuntu 20.04 "Focal" (+ variants like Kubuntu)||Nov 19 2020||5.0.3||N/A||Yes||Yes||Gold||Shu Shang|
|Current||Arch Linux x86_64||Nov 23 2016||1.9.23||Yes||Yes||Gold||an anonymous user|
|Show||Ubuntu 15.10 "Wily" i386 (+ variants like Kubuntu)||Dec 29 2015||1.9.0||Yes||Yes||Gold||ABlankName|
|Show||Debian GNU/Linux 8.x "Jessie" x86_64||May 16 2016||1.6.2||Yes||Yes||Platinum||an anonymous user|
|Show||Debian GNU/Linux 8.x "Jessie" x86_64||May 09 2016||1.6.2||Yes||Yes||Gold||an anonymous user|