The third title of the three games collectively known as the Marathon Trilogy, you reprise your role as a security officer, you must rewrite time to stop an eldritch being named the W'rkncacnter, which was released from its imprisonment in Lh'owon's sun, this beast of chaos, if left unchecked, would spell the death of the known universe!

Description

Version 1.1 of the Aleph one scenario, Portal of Sigma for SDL!It now finally work on the windows and linux Os thanks to the help of Gregory Smith ( Treellama, well, he helped a lot and Irons as well )Portal of Sigma feature:-New graphics for textures, weapons and sprites-New interface ( radar and head up display )-fixed terminal pics and chapter screen bug-fixed an untextured spot-the solo maps are now up to date with the Mac version-the sounds should set to 16-bit, this will avoid bugs.

Preview
Portal of Sigma SDL v1.1
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