BioShock vs Portal
BioShock
BioShock is one of the most highly acclaimed steampunk-themed shooters that has a very interesting twist - your very character's DNA can be modified through the use of a selection of plasmids and a special resource called ADAM, allowing you to have superhuman abilities which will serve you well, sometimes more so than the weapon you wield, in your adventure through the fallen underwater city of Rapture. Aside from the many violent mad men (a.k.a. Splicers), the game also provides players with challeging encounters with the iconic Big Daddies and Little Sisters.When it comes to non-military-styled shooters with an intensely immersive storyline, BioShock is among the handful of the "best of the best" (which includes the Fallout series, the Borderlands series, the Deus Ex series and others). The game boasts of having a rather dark storyline that actually challenges you to think about it in a more in-depth way; to link all the clues together to get the complete narrative that is surprisingly a lot more engaging that you'd expect.
2K Games has just released the remastered version of the very first Bioshock last year and if you can get it on Steam, you really should. The very unique experience it can offer you is very well worth the cost.
Portal
Portal is one of the most highly acclaimed and innovative puzzle-shooter game of all time. The game is set in the mysterious Aperture Science Laboratories where players, while playing as the human test subject, Chell, will need to manipulate objects and move through space by strategically opening portals to solve physical puzzles in controlled environments generated by the nefarious AI supercomputer, Glados.Featuring 19 levels in total that gets progressively more difficult than the previous, the game promotes creativity when it comes to puzzle-solving especially in the later levels, requiring players to explore various ways to best solve the level. There is also an advanced mode that drastically increases the difficulty of the last 6 levels. This is perfect for players who want to go a step further to challenge their puzzle-solving skills.
Portal is rather revolutionary in its own way and it's no wonder why the game has been awarded and nominated for multiple awards. If you fancy a fun and somewhat relaxing brain teaser, Portal is the game for you. Do check it out!