If playing on a PC or mobile device via an emulator (like DeSmuME or DraStic), you can use internal settings to increase the internal resolution. This makes the 2D sprites and backgrounds look significantly sharper than they would on original hardware.
When looking for a "better" version, compatibility is key. Ensure the ROM is trimmed (removing junk data) if you are using an older R4 card to save space. However, if you are using modern emulation, "untrimmed" ROMs are generally safer as they maintain the original file structure and are less likely to crash during save states. A Note on Safety halfelf tentacle assault ds rom better
Some players find the difficulty spikes in the original game frustrating. "Better" versions might include balance adjustments to the AI or resource management to make the strategy elements more enjoyable. Enhancing the Experience on DS If playing on a PC or mobile device