78. Serious Sam (Croteam, 2001)

In the late '90s tiny Croatian studio Croteam decided that shooters had gotten too brown, gritty and slow in recent years, and set out to rectify that with their debut game, Serious Sam. Not only did it look fantastic for the time, with enormous environments that were bright, colorful and intricately detailed, but it never lost a beat despite its action being downright manic. Even with the huge open areas, impressive visual effects and the fact that literally hundreds of enemies can be rushing you all at once, there's virtually no slowdown or framerate stutters. There's tons of hidden secrets in every level a la Doom or Wolfenstein, and the gameplay is reminiscent of classic arcade shooters like Smash TV - smooth-controlling, fast paced and uncomplicated, but certainly not easy. Learning enemy patterns, rationing pickups, using the right weapon in the right situation, prioritizing threats and of course circle-strafing constantly quickly become key to survival. A game where you somehow feel totally overwhelmed and completely in control at the same time, Serious Sam is a rush.
77. Betrayal at Krondor (Dynamix, 1993)
A groundbreaking and influential title in the genre, Krondor was based in the same universe as Raymond E. Feist's Riftwar novels and made a strong attempt to replicate their style, with in-depth descriptions and well-written prose for even the most mundane of interactions. It also featured open-ended exploration with quite a lot of hidden secrets and side-quests to experience, tactical turn-based combat, and is among the earliest games I know of to do away with a traditional experience system, instead giving each character a variety of skills that must be improved either through use or training with various NPCs. It later had a spiritual successor of sorts (Betrayal in Antara) and an actual sequel later on (Return to Krondor), though the original team was involved with neither game and the quality definitely suffered as a result.
76. Monkey Island 2: LeChuck's Revenge (LucasArts, 1991)
Monkey Island was never Lucasarts' best selling franchise, but its irreverent humor, strong atmosphere and well-crafted puzzles gave it enough of a following to get several sequels over the years. Monkey Island 2 follows Guybrush Threepwood on his quest to find the lost treasure of Big Whoop, running afoul of his once-vanquished nemesis LeChuck on the way. With more clever design, hilarious dialog and plenty of jokes tied to creative puzzles and a strong narrative, it's another solid title. It would also be the last game in the series that Ron Gilbert would work on for nearly thirty years, eventually returning to the series with 2022's Return to Monkey Island.
75. Master of Orion II: Battle at Antares (Simtex, 1996)
A beloved cult classic from Simtex and an archetypal example of the 4X genre, you pick one of several premade alien empires (or choose your own traits for a custom one), then set out across the galaxy to acquire resources, upgrade your technologies and pursue diplomatic relations (or open war) with other factions. Complicating matters are the Antarans, a powerful hostile race that appears late in the game and start attacking everything in their reach, often necessitating truces with other factions to beat them back. There are three way to win the game - conquering all other factions, being elected leader of the Orion Senate by having a high enough population, or entering the Antarans' dimension and conquering them. It can be a bit unbalanced in some respects, but it's still a highly regarded staple of the genre that retains a sizable following (and online play) to this day.
74. Cave Story (DÅkutsu Monogatari) (Pixel, 2004)
With the internet's explosion in popularity came an interest in indie games old and new, with sites like Newgrounds giving a lot of developers and fans a place to show off their talents and numerous abandonware sites archiving obscure and forgotten classics. Cave Story is one that came to peoples' attention not long after its initial release in 2004, garnering a lot of attention for its high quality Metroid-like design, presentation reminiscent of 8 and 16-bit retro titles, having a surprisingly engrossing story and being created over the course of five years by a single developer. Since then it's gotten tons of attention in the form of fan translations, ports to numerous platforms (official and otherwise), a slew of remakes, mods and source ports, and even a fan-created level editor.
73. Ion Fury (Voidpoint, 2019)
The prequel to the 2016 flop "Bombshell" but thankfully it succeeds in every way its predecessor failed, bringing back the Build Engine with all the panache and clever design that made games like Duke Nukem and Blood great in the first place. Fast-paced action in surprisingly realistic environments (well, as much as a twenty-four year old engine can muster, at least) with a huge number of interactive objects, secrets to find, clever enemy designs, tons of references to old 3D Realms games and a cool wisecracking protagonist, as well as some new features for the engine like climbable ladders and alt-fire for almost every weapon. It may not be the modern era's prettiest shooter, but I was having too much fun with it to care. Ion Fury is the long-lost cousin of all the classic '90s shooters.