2DPortal Prelude

"Welcome to the Aperture Science computer-aided enrichment center. We hope your brief detention in the relaxation vault has been a pleasant one. Your specimen has been processed and we are now ready to begin the test proper." 2DPortal Prelude is a FULL SIZED 2D recreation of "Portal Prelude". Featuring all the Test Chambers, the Advanced Chambers, the Challenges, the Achievements, and of cour…