Requires the base mod, Realistic Fusion Power.
Also known as "RFP Addons: Weaponry", I've changed up the name a few times...

Features:

• Plasma throwers because why throw thousands of degrees of hot flames when you can throw billions of degrees of hot plasma?
• Thermonuclear bombs a lot more powerful than uranium bombs!
• Pure fusion bombs even more powerful than that! Do not underestimate the power of these things. Not a good idea. I'm talking from experience.
• Antimatter bombs that are so powerful they kill whoever fires them. There's an artillery shell version, use that if you don't plan on dying.
• Small scale pure fusion weaponry because fusion has no critical mass and thus can be scaled down to effectively any size: cannon shells, small rockets, shotgun shells, and even bullets!
• Small scale antimatter weaponry. VERY powerful.
• Fission, thermonuclear, pure fusion and antimatter artillery shells.
• New graphics for all nukes + smoke effects for explosives to simulate a shockwave.

There's an Alt-F4 post with some gifs of how the explosions look (-ed, they're outdated now. You can still switch to them in the mod settings if you like those more than the current ones.)
[If you want to contact me directly for any reason, do so though the forums, discord: Romner#5341 or the discussion section.]