GAME HUB
Portal
4 GameModMashups links tagged Portal.
MrLuke1618
portal-strike-source
Portal Gun tactical mashup for Counter-Strike: Source with live see-through portals and reverse-time killcams
GongerNonger
portalcraft
Play Portal as Steve: Minecraft's movement, blocks, mobs and TNT inside real Steam Portal (Fabric mod + Source plugin), plus a portal gun for plain Minecraft