Making a RTS game #49: Optimisation tips & tricks (Unity/C#)

Let’s talk of possible optimisations for our Unity game!

⬅️ Tutorial #48: Various fixes, improvements and clean-ups| TOC | Interlude #4: Improving the healthbars ➡️

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In the last episode, we talked about very down-to-earth fixes and refactors to improve our game. Those are of course essential, but they are not the only way to make your game better! In particular, as we are nearing the 1-year anniversary of this tutorial and implemented a lot of systems, I thought it would be a good idea to take a step back and discuss optimisation…

Optimisation is obviously an important topic for video games since they usually require you to run code in real-time but with limited resources (especially on mobile platforms). It’s the key to running your game on low-end platforms, to meeting some app store criteria (like the time-to-first-display constraint) and overall just to using less resources (in terms of CPU, memory, energy…).

As explained in several official Unity talks (that I’ll try and sum up in this article), there are plenty of things you should be cautious about as you improve and…