10 a is fitted in the hole 11 a so that the upper deck 11 is supported the side plates 12 are weapons for fighting the other toy top 1 a variety of side plates 12 with different outer shapes are prepared and a suitable set is selected and attached to the main body 10 as illustrated in fig2 each of the side plates 12 has a cutout or a hole 12 a in the middle part pins 30 are implanted on the main body lower portion 10 b and the side plates 12 are held between the main body lower portion 10 b and the main body upper portion 10 a with the pins 30 inserted in the cutouts 12 a when the bottom plate 13 comes in contact with a ground surface such as a floor it causes a change of the behavior due to a change of the load applied thereto a variety of bottom plates 13 with different uneven shapes of the bottom are prepared and a suitable one can be selected to enjoy the change the bottom plate 13 has a hole 13 a in the center part thereof and the bottom of the main body 10 is fitted in the hole 13 a so that the bottom plate 13 is supported as illustrated in fig9 players can play with the toy tops 1 with the above described configuration for example by making them fight each other in a battle stadium 31 the battle stadium 31 includes an approximately circular field 31 a and u shaped standby spaces 31 b for housing the.