Team Fortress 2 Standalone mods and various other Valve games will no longer have to pay licensing fees to use the Havok engine present in some Valve titles
Source: N4G PC Team Fortress 2 Standalone Mods Getting Havok Fees Waived
Team Fortress 2 Standalone mods and various other Valve games will no longer have to pay licensing fees to use the Havok engine present in some Valve titles
Source: N4G PC Team Fortress 2 Standalone Mods Getting Havok Fees Waived