Recently ran into this problem on Chrome, that is apparently a long time issue that comes and goes with various Chrome updates.
In some games, the keyboard controls are either partially working, works at first then stops, or doesn’t work at all. It’s really annoying, but I found a fix.
1.Click wrench icon in Chrome
3.Under The Hood
5.Disable Individual Plugins (in the Plug Ins area)
6.Click blue +details button on right
7.There are 2 flash files
8. Disable the one that ends with gcswf32.dll, and enable the other one.
This bypasses Chrome’s built in flash player, and lets you use Adobe’s non-Chrome one (fixing the keyboard controls problem). You might get a message after restarting browser to download Adobe’s flash, but it takes a few seconds.
Sorry if this has already been brought up, but noticed a lot of game comments having this problem, and wanted to share the fix.