After Amon's defeat, a mysterious gate opens on Aiur. Unknown invaders attack the Daelaam, which may not be such a good idea...

SCP-4902 "The Gate" is a portal that connects Earth to another world, the SCP Foundation has taken action as their part in defending humanity from entities or objects that breaks the natural law.

After the RED mercs win against Gray Mann, his robots, and the Team Fortress Classics (TFC), they decide to celebrate outside Coal Town. It was until Merasmus showed up and casted a spell to kill them and take their souls, only to open a portal to another world! The mercs, now in a new place they're unfamiliar with decides to explore. This starts to grab the attention of the JSDF.

After two years of peace and prosperity, a mysterious gate had opened on Korhal within the capital city of Augustgrad. From it, invaders emerge straight out of medieval times as they bare threats of slavery and death to the Terran world they had set foot on. But they were soon going to learn they had picked a fight with the wrong people. R&R please.