[H]B.M.O.C [W] Offers.

Half-Life 2 or Nation Red for B.M.O.C

Myst URU: Complete Chronicles / Sanctum / Swords and Soldiers HD / Sniper Elite

+1 of these Edge / Vega$: Make It Big / Bad Rats: the Rats' Revenge

or just Frozen Synapse / Wolf Pack

Day of Defeat Source.