For RTS games I wish we could blame bit flips, but more typically it is uninitialized memory, incorrectly-not-reinitialized static variables, memory overwrites, use-after-free, non-deterministic functions (eg time), and pointer comparisons.

God I love C/C++. It’s like job security for engineers who fix bugs.

Some games are reliable enough. I found out the DRAM in my PC was going bad when Factorio started behaving weird. Did a memory test to confirm. Yep, bitflips.