The Windows phone app which has gone free next as myAppFree app of the day is DOSBox. DOSBox emulator will let you play your favourite classic games easily on your phone. Unfortunately , not all DOS games are supported (due to the ARM CPU performance and hardware limitations) but a lot of good old games (including Sierra’s quests, Warcraft, Heroes of Might & Magic and many more) are working fine.
Moreover it makes possible to run Windows 3.1 and Windows 95 on phone!
DOSBox feature: x86 CPU emulation
Thats amazing isn’t it? And…It is FREE!!! ( down from $2.99)