6. Mass Effect
Mass Effect offers a combination of RPG, shooting and verbal interaction via the use of sentence selection. Really it's an exploration AI chat engine and believe it not it wasn't the first by far... The Commodore Amiga 500 was capable of remarkable graphics seemingly impossible given the CPU speed being a miniscule 7Mhz. Yes that's around five hundred times slower that CPUs of today. Still, the 1988 game Captain Blood provided vivid true 3D fractal graphics and planets that rotated as you scanned them. The basic premise of Captain Blood was to travel to various systems and probe the planets and then gain trust of the alien creatures found there via the use of emoji-style icons. The communication interface allowed you to speak their language fluently and so it was like Mass Effect but instead of choosing full English sentences you had to actually figure out each races' speech pattern using various buttons which represented individual words. Graphically it doesn't hold a candle to Mass Effect, but Captain Blood offered interaction and exploration that at the time was neigh on unheard of, plus Captain Shepherd's verbose command of English had nothing on Captain Blood's multilingual xeno language skills.