Well, i don't know how to start. I've been thinking that techtree contests are somewhat forgotten, and I have a small idea. Let's see if he can overcome the embryonic stage. Two semi-races (if they are completed techtrees, better) completely opposite. I will try to explain myself. —Opposite races? Regarding this point, I refer to two races that face and confront, both in the idea itself, and in its techniques, units and styles. —Idea itself The races aren't just units. They fight. They hate each other. And some races hate each other more than others. This is what "opposites in the idea" means —Techniques All the races have different techniques. And some techniques are opposite with other. Per example: The humans are really good with tower rush (create towers directly in front of the enemy bosses) In Warcraft 3, all the races have opposite techniques (ah, beautiful Blizzard) so I will explain it with aka the original races. -Undead: they can use necromancers and wyrms to stop all the towers in only one attack -Orc: I don't use the orcs, so I will appreciate any help. Now, I just remember the shadowhunter. He can use his ultimate to make invulnerable all the siege catapults. -Night elf: Mmmm... Maybe the structure attack. I don't know. -Humans: They can fight with humans too, no? Easy. Cloud. Units and styles: Each race have a style of units, based on his price, power, type of attack and spells, etc. As an example, the Undead have a style of cheap units, fast and combined effects with other units, except for some units such as the wyrms. =============================== Example: An example is the Protoss and the Zerg. I will suppose you know them. I explain myself. Idea itself: The Protoss are in war with the Zergs for a lot of years. This is a war into the Order, the technology, and the perfect mind of the Overmind, controlling basically beasts. They are similar, but different too. -Techniques: I don't play StarCraft, but I think the Protoss attack with giant and powerful attacks, to destroy an enemy in just 3 or 4 attacks. The Zergs, in opposite, fight with continuous and persistent attack, to win by wearing down the enemy (this does not mean that they do not make devastating attacks too) -Style of units: The Zergs have a cheap and fast style (ZERGLINGS). The Protoss are just the opposite. =============================== By the request of the public (I know that it does not fit at all, but I always wanted to say it ) and to clarify doubts, I will put an example-idea improvised. Imagine that I am a participant in the contest (which is not yet one as such, but ... AH, I must return to the point). in this case, and understanding what I mentioned above, I think of an idea, and, like me, invented member (let's call it in 3rd person of singular, name NN) is basic, is in a hurry, and he/I (NN) can not think of anything else, NN resort to the typical example of antagonistic dialectics: Light and Darkness. In this case, NN should think and create two semi-complex techtrees, whose techniques and features, unlike what happens in Warcraft 3, are COMPLETELY opposed. Why? Precisely because they are rival forces! Does this mean that they can not have traits in common? Of course not. Many will agree that extremes touch, and all light has darkness, and vice versa. But this dialectical opposition must be embodied as well as possible, so that, if you change the models, names, and descriptions to both races, someone outside could guess that they are opposite. That is the goal. So, the NN techtrees, obviously semi-incomplete: Light: Low cost units, excellent defence. -Units: Light soldier: 175 gold=five soldiers. Very weak unit. Crusader×2: 275 gold, 30 lumber. Two crusaders, one mele ranged, 400 HP, no skills, and one ranged, 150 HP, damage per time skill (Purge?). Angel: 330 gold, 40 lumber. Mele ground unit-flying unit. Can heal. Etc. Etc. Etc. You can imagine it. Structures: Three towers: Heal tower, purging tower (high damage in a specific zone) and Sky tower (really expensive)(two modes: Fast attack, 8-11 of damage every 0.35 seconds, Slaughter mode: 100-150 damage every 10 seconds, and effect mode: Heal all allies 5 HP per second, and damage enemies 10 HP per second) And it continuous. I don't want to write all =============================== I hope you understand. If I forgot something, please say it.