This is what ScummVM offers as installation information when added.
If no other information is given with "Additional Information" those details are correct for the differing version aswell and the game runs.
ID: wmefan-Reversion2-win
Name: Reversion2 (fangame) (Windows)
Additional Information: Can be bought from the developers webshop
http://www.desura.com/games/reversion-the-meeting
English Speech and Texts
The game in 'Games:GamesVM/Wintermute/Reversion/Chapter 2 - The Meeting/' seems to be unknown.
Please, report the following data to the ScummVM team along with name
of the game you tried to add and its version/language/etc.:
{"xlanguage_en.dcp", 0, "74f3c75dc4f62e784682016b37990122", 8440487},
{"data.dcp", 0, "c4aa6295bc6cef6995430232298fdd5f", 255654527},
{"xlanguage_nz.dcp", 0, "42f775cb68f7718d0751758a66816b98", 8734800},
Any idea what version this is?