The following games have so far been approved and are free to play (with source link):

• Overwatch 2: Free on Steam https://store.steampowered.com/app/2357570/Overwatch_2/

• Maniac Mansion: https://archive.org/details/msdos_Maniac_Mansion_1987#

• Old School Runescape: https://store.steampowered.com/app/1343370/Old_School_RuneScape/

• Full Throttle: https://archive.org/details/msdos_Full_Throttle_1995

• Phantasmagoria: https://archive.org/details/msdos_Phantasmagoria_1995

• Myst: https://archive.org/details/psx_myst

• RESI1: https://archive.org/details/ps1-cheat_resident-evil-directors-cut

• Silent hill 1: https://archive.org/details/psx_silenth

• Colonel's bequest: https://archive.org/details/msdos_Laura_Bow_1_-_The_Colonels_Bequest_1989