After a long and contentious political debate, the instant lottery was
introduced in the Netherlands in 1994. One of the conditions for allo
wing the introduction was that an evaluation study should be conducted
with regard to possible negative side effects of the instant lottery
in terms of excessive playing or addiction. This article reports on th
e main results of this evaluation study. In a random sample of 4497 in
stant lottery players, at-risk players were differentiated from recrea
tive players on the basis of level of involvement in the instant lotte
ry, impaired control and the experienced negative consequences of play
ing. Of the sample, 4.1% could be classified as an at-risk player. Act
ual problems resulting from playing in the instant lottery were experi
enced by 0.7% of the players. At-risk players and recreative players d
id not only differ substantially in their playing behaviour, bur also
with regard to their socio-economic background, playing motivation, pa
rticipation in other games of chance, and involvement in alcohol use a
nd use of marijuana. To summarize, at-risk players were more likely to
come from a poor socio-economic background, to play the instant lotte
ry with a negative playing motivation, to be heavily involved in other
forms of gambling, to have used marijuana and to drink alcohol excess
ively.