This game has been recovered from a floppy disk from the distant future and modified to run in a modern computer browser. The below text from its original instruction manual (also from the distant future):

BaseSol - The Milky Way Sport 2

There's nothing humans love more on a casual Sunnday evening than heading to the local planetarium, buying some hot dogs or American Sludge, and looking up at the sky to watch a good old fashioned game of Basesol. Since the Global Basesol League was formed in 2876AD, they have worked with the best Basesol players around the world to compete for an international audience during Basesol season. Combining humankind's love of stargazing and competition, Basesol was one of the first Sports 2 to capture the hearts of those curious about the limitations of Astral Projection - or lack thereof!

Default Controls

Controls can be changed in the Options Menu.

Command
Player 1
Player 2
Gamepad Movement
Arrow Keys
IJKL
D-Pad Confirm z
o
A Button
Cancel x p
B Button
Pause Enter [
Start Button

What these controls do will vary depending on where in the game you are. You can press the H key on your keyboard or the Back button on your gamepad at any time to toggle context-aware instructions.

“How” to Play

Much like the ancient “sport” (note the lack of 2) of “baseball”, players form two teams that alternate between two different play styles. The stopping team has a pitcher who throws the sol to the jumping team's becomer (much like a baseballian “batter”), who must hit the sol with their spirit hands. Doing so will fuse the becomer with the sol and project them into the game field.

Once the sol is in the field, the becomer must jump off the sol and run to a nearby star. Brighter stars have stronger gravitational pulls that will pull the sol towards them. Successfully arriving at a star will earn the jumping team a point. The stopping team's job is, as their name suggests, to stop the becomer from reaching a star safely. The stopping team has two types of player at their disposal: the catchers that guard each star, and the wanderers that can move freely around the game field. A becomer can be taken “out” in a few ways:

If any player on the stopping team catches the sol while the becomer is still fused with it, the becomer will become out.
If a catcher is holding the sol when the becomer arrives at their star, they will become out.
Any catcher or wanderer can perform a slam, which will launch several mini black holes out a short distance. if the becomer is caught in any of these, they will be slam dunked and become out. Additionally, the pitcher's black holes will last much longer than those of other players on the stopping team and will home in on the becomer.

After the jumping team has had 3 players taken out, the teams will switch and repeat. After both teams have jumped and stopped, the next inning will begin. The game will end after three innings.

For more in-depth information and advanced strategies, check out the Full Instruction Manual.

Additional Credits

“Awake! (Megawall-10)” by Cynic Music, released to the public domain.
“Neo Springcore” by Spring, released to the public domain.
“7 Assorted Sound Effects” by Joth, released to the public domain.
“100 CC0 SFX” by rubberduck, released to the public domain.
“Play Ball! v2.wav” by CGEffex, licensed under the CC BY 3.0 license.
“3D Man Running Eight Directions” by Randy Tayler, released to the public domain.
“Trophy” by Jeremy Woods, released to the public domain.
“Another Space Backgrounds” by Rawdanitsu, released to the public domain.
“8-cell-orig.gif” by Jason Hise, released to the public domain.
“Cleveland Browns New Uniform Unveiling.jpg” by Erik Drost, licensed under the CC BY 2.0 license.
“Retro Gaming Font” by Daymarius, which is licensed as "free for personal and commercial use."
Box2DWeb, which has no license provided, but is a port of Box2DFlash, which uses the zlib License. That is, of course, a port of Box2D, which uses the MIT License.
mespeak.js, licensed under the GNU GPLv3.

Zenn Halsey Basesol '93 screenshots