OXM loves (opens in new tab) Oddworld: New 'n' Tasty. It's a game that wouldn't have felt particularly old-fashioned with a simple spit 'n' polish HD update - but the fact that it was reworked entirely gives its timeless ideas a new lease of life. You really should play it - which is why I've got a few free codes for you to nab, all stealthy-like.
All you need to do is work out what letter I've replaced with a "?" in each code, by referring to my fiendish clues - each one's a command Abe can give using the GameSpeak system.
Clue: "_ollow Me"
Clue: "_histle 1"
Clue: "All O' _a"
Clue: "Whis_le 2"