Focus of games must be combat. I hate DnD because it is about natures, aligments, evil, good, chaotic stuff and you have to play as human like creatures and there is limited amount of classes. In a great game you have to be able to play as everything. I must be able to be dragon, robot, turtle, lion. All characters must be playable with skills and class levels ETC. So i built my RPG system. If your damage is 8 that will mean you will deal random damage between 1 and 8. So you will roll 1d8 but we mostly use random number generators in my game. There is also dodge and hit rate for calculating accuracy. You add your hit rate and enemys dodge to each other. Lets say your hit rate is 10 enemy dodge is 4. That makes 14. If you roll higher than 10 you will miss; otherwise it is a hit. So if enemy has 1 dodge and you have 15 hit you will roll between 1 and16; if it is 16 you miss if it is between 1 and 15 you hit. Core mechanics are like that; pretty easy and normal. Problem is cooldowns of skills are very hard to calculate. Each turn decrease cooldown of 1 skill. If you have too many skills and cooldowns, it can be really hard to refresh all cooldowns. Also you can roll a number for making a cooldown ready. If cooldown is 28; you roll number between 1 and 28 if you roll 28 your cooldown for that skill becomes 0. Like all systems at late levels mana is being to high and you can cast extreme skills; for balancing the game everything have got Saiyan auras. By consuming mana every turn; you make all of your stats buffed so you become more defensive and dont die. Ofcourse spells and skills cant be balanced and your characters cant be balanced too. Because of that we create characters and let you choose one of this characters and give some paths, skill trees to this characters and let you choose which direction you will go while developing your champion. Game can be everyone fight against same monsters and than they fight against each other. Or deathmatch survival looting arena. Or coop boss killing chest looting thing. However i prefer games like Death of Winter. You play as a government and you move your heroes. You can buy new heroes and your heroes can die pretty easily; that type of game more fun and better i believe. Do not obey to rules; make a fun balanced fair game. Goal is luck, strategy, methods for defeating your enemies. About movement and range; this things must be more more expensive as you level up them. 1 move can require 1 point but 2 move must require 3 and 3 move must need 6 points 4 will be 10. Because also in real world; moving fast requires way more power. There is sound barrier and lightspeed and air doesnt let you move fast. Also gravity; your weight will affect so it is not easy to move too fast it is very expensive. ıf everybody move 10 tiles every turn; that will be a meaningless map. You know there is a tiny board you playing on and you must not move fast; that makes map smaller. First you move based on your speed stat like in pokemon. First you play regeneration turn. You regenerate hp equal to your HPR,if hp is full you hold your extra HP until end of the turn so your regeneration also con block the damage you will take. Also there is armor block ETC this things act like HP but more different and complex, they also take damage before your HP. If you dont have hp your mana will take the damage. If you die, you stay in corpse mode and if they dont kill you, you can stand up and survive. After recover you move and attack. You do not attack and move; there is no hit and run. After that turn is ended and you manage your cooldowns ETC. So each turn is made of 3 turns; regeneration, move, end turn keeping tracks. And you have to write everything; otherwise you can forget or people may cheat. Most important thing is enemies must have levels and skills too; they have to be playable characters. And based on difficulty their levels will change; and difficulty must be very balanced; rat and dragon at same difficulty must have equal power otherwise difficulty will not have a meaning. But you can edit difficulty for adding more fun and art to game. First create characters and their skills, builds, passives than let players choose one. At start all players must have nearly same power; do not let them do what they want; let them choose what they want. If you give freedom to players they will try to be very strong and break the fun of game. We have seen that in DnD Online or Neverwinter. Skills must have cooldowns but this cooldowns will be random so things will not be same. 20 cooldown means something between 1 and 20 so you can roll 1 and ignore the cooldown of skill. Players dont like to do same thing many times so everything has to be different everytime. By the way using electricity causes climate change; and Earth want to kill all of you.