Space Duel, Gravitar, Tempest, and Quantum, all restored to fully operational.
Each one came in as its own project: a Wells-Gardner WG6100 color vector monitor to rebuild, an original Atari board set to recap and repair, a cabinet to patch, and artwork to redo. The full Tempest restoration is the deep-dive. The other three got the same ground-up treatment.
Restoring these is also what got me rebuilding the games themselves in software, Tempest and Quantum.
