1993: Helloween – Chameleon
| metalstorm | 9/10 |
| metal-bell | 7,4/10 |
| maelstromzine | 6,9/10 |
| seaoftranquility | 3,5/5 |
| metalreviews | 5,5/10 |
| sputnikmusic | 2,5/5 |
| metalcrypt | 2/5 |
| metalexpressradio | tip |
| hubpages | tip |
1991: Helloween – Pink Bubbles go Ape
| maelstromzine | 9/10 |
| metalstorm | 8,4/10 |
| metalreviews | 7,5/10 |
| seaoftranquility | 3,5/5 |
| sputnikmusic | 3/5 |
| metalcrypt | 3/5 |
| 6/10 | |
| metalexpressradio | tip |
Helloween – Keeper of the seven keys Part 1&2
| lightningslim | 8,5/10 |
| rocktopia | tip |
1988: Helloween – Keeper of the seven keys Part 2
| blabbermouth | 10/10 |
| albumsthatrock | 9,75/10 |
| metalstorm | 9,5/10 |
| seaoftranquility | 4,5/5 |
| piercingmetal | 4/5 |
| metalcrypt | 4/5 |
| sputnikmusic | 4/5 |
| jotakapf | tip |
| invisiblesandwichtm | tip |
| rollingstone | tip |
| colinkellymusicinreview | tip |
| lukasskully | tip |
1987: Helloween – Keeper of the seven keys Part 1
| metalstorm | 10/10 |
| blabbermouth | 10/10 |
| piercingmetal | 5/5 |
| sputnikmusic | 5/5 |
| mikeladano | 5/5 |
| mhf-mag | 5/5 |
| guitarmasterclass | 9,5/10 |
| seaoftranquility | 4,5/5 |
| metalcrypt | 4/5 |
| spirit of metal | 18/20 |
| theaceblackblog | 7,67/10 |
| crypticrock | tip |
| metalreviews | tip |
| angrymetalguy | tip |
| metalexpressradio | tip |