pioneer in arcade games: crossword clues

Matching Answer
Confidence
ATARI
60%
ATARIS
60%
SEGA
60%
TILT
60%
PAC
60%
TILTS
60%
EPEE
60%
COINOP
60%
UTAH
60%
PONG
60%
e.g. Greek Cheese
e.g. O?D (Use ? for unknown letters)