[STEAM] Pixel Cafe -94% (NEW HL)

It's also available on Indiegala, but a bit more expensive. Maybe this code works. Normally, they state it, when a game can't be redeemed in specific countries.
Indiegala

Or on Gamersgate (Use the code ITAD for 10% extra off). They state, that their key can be activated in Algeria:
I don't know why, but the link to Gamersgate doesn't work, if I C&P it. You have to look the game up manually on their page www.gamersgate.com

Assuming you're MENA: It's too cheap now to be sold on Steam in your country. At 90% it was still available.