Backyard baseball, loved that game as a kid.

Power Blade on the NES. You are a Schwarzenegger-in-his-prime-like character in the future fighting the robotic underlings of an AI gone rogue. It has only 7 levels or so, but it has a nice gameplay to it, and the music was composed by Kinuyo Yamashita, who also did the Castlevania music. Needless to say, the soundtrack is top notch.

Rune factory 3. It’s not popular anymore, nor do I see it talked about but I still play it from time to time. Sometimes I leave it open just to listen to the music/background and sometimes I fire up youtube and my speaker just to listen to its OST.

Comix Zone. It was a beat-em-up on the Sega Genesis with a gorgeous, comic book art style. It wasn't the greatest game, but it had character and it stood out against some of the other fighting games at the time. I'd really love a remake or sequel at some point. Doing it in the style of the Spider-verse movies would be rad.

Dirtybomb

Ogre Battle, either March of the Black Queen or Person of Lordly Caliber. It's such a weird cul-de-sac of tactical RPGs. The same company made Tactics Ogre, which then became Final Fantasy Tactics, which in turn inspired a zillion other post-2000 tactics games; and Tactics Ogre got a remake version recently. But the Ogre Battle side of the family just disappeared.

The Banner Saga, beautiful hand drawn rotoscoped visuals and animation, great characters, strong story and lore. Gameplay is turn based strategy, and it’s very addicting. Absolutely fantastic music. Never hear anyone talking about it.

Just for your information, there are actually two other games related to Rocket Slime. Unfortunately they are JP only. The one that release outside of Japan is the 2nd game. There's a GBA game that came out before it and a sequel to the DS game focused on pirate ships

Kenka Bancho. It's a series of japanese games for the PSP, with only the 3rd game being officially translated and released outside Japan as Kenka Bancho Badass Rumble. It's like playing a typical shonen anime set in high school, you're a delinquent who fights everyone from the other schools in order to become the ultimate badass. It's semi open world and you can beat pedestrians and innocent civilians, which reduce your badass meter, because real badasses only fight people who can fight back! And with their bare hands, weapons are for weak pussies! It's over the top and fun as hell. I've only ever met one other person mention that game, and it was an RPG friend of mine, when he bought a PSP for himself.

Something I highly recommend for anyone that enjoyed River City Ransom or similar beat'em ups.

May be a little off from what you're asking but one of my favorite games period is Bookworm on the GBA. It was originally a flash game but when it came to GBA you could save your progress. The music was so cute and the sound effects were just awesome. They tried to bring it to the DS without that music and the effects and it just didn't work. Other iterations exist as well, none as cool and enjoyable as the GBA version. I'm stuck emulating until someone rediscovers this neat little game and brings it to switch or steamdeck.

I really loved rocket slime as well. There's a spiritual successor called connectank on steam that gives me the same vibes, and has fun co-op!

@LeylaaLovee Opoona on Wii, even though it has an official ENG translation

Waddington’s House of Games smash hit “Ulcers”

https://boardgamegeek.com/boardgame/2517/ulcers

Endorfun. I got it for Christmas in 95 or 96 and would spend hours playing it. Years later I would get emulators to continue playing it. Introduced my college roommate to it. There were times I couldn't get the sound of the animations to work, but I kept coming back to it. Every now and then, I'll revisit it. Wish it would get a rerelease or new version, maybe something I could pay on my phone. Loved the music, the moving colors and textures. It has a therapeutic way of getting me out of my head.

Sally Can't Sleep. It's a strange indie first person platformer with a lot of focus on versatile and exploitable movement mechanics. The dev sacrificed visual polish for quantity and style, so the game has a lot of interconnected levels with a wide variety of different mechanics, types of level design, and visual styles - it's a really good example of how much a solo developer can accomplish. It's pretty funny, too. I don't think I've ever seen a game pull a credits gag like it did.