old pc game where your a little man that digs and push puzzle

The main quest consists of you carrying your-size boulders, and placing them in a well imagined line, so when you push the exact one, all must fall, and the one that marks the end must fall the last, or the door will stay shut permanently. After each different place inside, you'll fins a small bag of cookie, and bring it back to your friend doggie. It's path is filled up with boulders, and all the gates, and you must travel the quest to find the cookies.

Now, this ant-hill is a bit different from the ones you saw, and especially from the one you live in. Now, you're goin' in, in a mission of solving puzzles, and retrieving the cookies for your friend. Apparently, your friend, doggie, likes to eat cookies that has his picture on their box, and he got himself so carried away that he lost the balance, and a bag of cookies fell deep down into an ant-hill. Please help me to remember this game's title.You're playing a small ant that is willing to help a friend in rather inconvenient situation. I made a little sketch by memory for you. I do NOT remember any info about publisher and/or developer. The game has an isometric top (2.5D) view. It seems to me that an action of the game take place in some desert or unhabitable planet. I definitely remember this game has a beautiful intro video rendered in 3D, as in many video games of that time. I believe, robots of different color have a different head shapes. Once the player completes the current level, some new types of forwarding plates has become available (which redirect robots by its color, to different side etc). The puzzle's goal is to direct/forward as many robots as possible to the 'exit' squares of correspondant color by placing a direction (arrow) tiles on a game field. If two robots hits each other or some obstacle they disappear, and a player waste his potential scores. A several groups of robots with the same color per group spawns (from conveyor belt?) and start to run forward across a game field (which is rectangular, divided by squares). This puzzle/strategy game is about anthropomorphic robots having different colors. I definitely have play it on my Windows PC (Win98 maybe) machine. Hello! Please help me to remember an old PC game I have been played about a year of 2000.

Old pc game where your a little man that digs and push puzzle